[t:4570] finishing the enum->int change for checksum errors

git-svn-id: file:///svn/toku/tokudb@44326 c7de825b-a66e-492c-adef-691d508d4ae1

ft/block_table.c

@@ -778,12 +778,12 @@ translation_default(struct translation *t) {  // destination into which to creat
 }
 
 
-static enum deserialize_error_code
+static int
 translation_deserialize_from_buffer(struct translation *t,    // destination into which to deserialize
                                     DISKOFF location_on_disk, //Location of translation_buffer
                                     u_int64_t size_on_disk,
                                     unsigned char * translation_buffer) {   // buffer with serialized translation
-    enum deserialize_error_code e;
+    int r = 0;
     assert(location_on_disk!=0);
     t->type = TRANSLATION_CHECKPOINTED;
     {
@@ -794,7 +794,7 @@ translation_deserialize_from_buffer(struct translation *t,    // destination int
         u_int32_t stored_x1764 = toku_dtoh32(*(int*)(translation_buffer + offset));
         if (x1764 != stored_x1764) {
             fprintf(stderr, "Translation table checksum failure: calc=0x%08x read=0x%08x\n", x1764, stored_x1764);
-            e = DS_XSUM_FAIL;
+            r = TOKUDB_BAD_CHECKSUM;
             goto exit;
         }
     }
@@ -817,9 +817,8 @@ PRNTF("ReadIn", i, t->block_translation[i].size, t->block_translation[i].u.disko
     assert(calculate_size_on_disk(t)                                     == (int64_t)size_on_disk);
     assert(t->block_translation[RESERVED_BLOCKNUM_TRANSLATION].size      == (int64_t)size_on_disk);
     assert(t->block_translation[RESERVED_BLOCKNUM_TRANSLATION].u.diskoff == location_on_disk);
-    e = DS_OK;
 exit:
-    return e;
+    return r;
 }
 
 // We just initialized a translation, inform block allocator to reserve space for each blocknum in use.
@@ -848,15 +847,15 @@ blocktable_note_translation (BLOCK_ALLOCATOR allocator, struct translation *t) {
 // The one read from disk is the last known checkpointed one, so we are keeping it in 
 // place and then setting current (which is never stored on disk) for current use.
 // The translation_buffer has translation only, we create the rest of the block_table.
-enum deserialize_error_code
+int
 toku_blocktable_create_from_buffer(int fd,
                                    BLOCK_TABLE *btp,
                                    DISKOFF location_on_disk, //Location of translation_buffer
                                    DISKOFF size_on_disk,
                                    unsigned char *translation_buffer) {
     BLOCK_TABLE bt = blocktable_create_internal();
-    enum deserialize_error_code e = translation_deserialize_from_buffer(&bt->checkpointed, location_on_disk, size_on_disk, translation_buffer);
-    if (e != DS_OK) {
+    int r = translation_deserialize_from_buffer(&bt->checkpointed, location_on_disk, size_on_disk, translation_buffer);
+    if (r != 0) {
         goto exit;
     }
     blocktable_note_translation(bt->block_allocator, &bt->checkpointed);
@@ -864,14 +863,14 @@ toku_blocktable_create_from_buffer(int fd,
     copy_translation(&bt->current, &bt->checkpointed, TRANSLATION_CURRENT);
 
     int64_t file_size;
-    int r = toku_os_get_file_size(fd, &file_size);
+    r = toku_os_get_file_size(fd, &file_size);
     lazy_assert_zero(r);
     invariant(file_size >= 0);
     bt->safe_file_size = file_size;
 
     *btp = bt;
 exit:
-    return e;
+    return r;
 }
 
 

ft/block_table.h

@@ -24,7 +24,7 @@ struct block_translation_pair {
 };
 
 void toku_blocktable_create_new(BLOCK_TABLE *btp);
-enum deserialize_error_code toku_blocktable_create_from_buffer(int fd, BLOCK_TABLE *btp, DISKOFF location_on_disk, DISKOFF size_on_disk, unsigned char *translation_buffer);
+int toku_blocktable_create_from_buffer(int fd, BLOCK_TABLE *btp, DISKOFF location_on_disk, DISKOFF size_on_disk, unsigned char *translation_buffer);
 void toku_blocktable_destroy(BLOCK_TABLE *btp);
 
 void toku_ft_lock(FT h);

ft/ft-internal.h

@@ -529,10 +529,9 @@ deserialize_ft_from_fd_into_rbuf(int fd,
                                  struct rbuf *rb,
                                  u_int64_t *checkpoint_count,
                                  LSN *checkpoint_lsn,
-                                 u_int32_t * version_p,
-                                 enum deserialize_error_code *e);
+                                 u_int32_t * version_p);
 
-enum deserialize_error_code
+int
 deserialize_ft_versioned(int fd, struct rbuf *rb, FT *ft, uint32_t version);
 
 int
@@ -593,7 +592,7 @@ int toku_serialize_ft_to_wbuf (
     DISKOFF translation_location_on_disk, 
     DISKOFF translation_size_on_disk
     );
-enum deserialize_error_code toku_deserialize_ft_from (int fd, LSN max_acceptable_lsn, FT *ft);
+int toku_deserialize_ft_from (int fd, LSN max_acceptable_lsn, FT *ft);
 int toku_serialize_descriptor_contents_to_fd(int fd, const DESCRIPTOR desc, DISKOFF offset);
 void toku_serialize_descriptor_contents_to_wbuf(struct wbuf *wb, const DESCRIPTOR desc);
 BASEMENTNODE toku_create_empty_bn(void);

ft/ft-ops.c

@@ -774,16 +774,13 @@ int toku_ftnode_fetch_callback (CACHEFILE UU(cachefile), int fd, BLOCKNUM nodena
     // deserialize the node, must pass the bfe in because we cannot
     // evaluate what piece of the the node is necessary until we get it at
     // least partially into memory
-    enum deserialize_error_code e;
-    int r = 0;
-    e = toku_deserialize_ftnode_from(fd, nodename, fullhash, node, ndd, bfe);
-    if (e != DS_OK) {
-        if (e == DS_XSUM_FAIL) {
+    int r = toku_deserialize_ftnode_from(fd, nodename, fullhash, node, ndd, bfe);
+    if (r != 0) {
+        if (r == TOKUDB_BAD_CHECKSUM) {
             fprintf(stderr,
                     "Checksum failure while reading node in file %s.\n",
                     toku_cachefile_fname_in_env(cachefile));
-        } else if (e == DS_ERRNO) {
-            r = errno;
+        } else {
             fprintf(stderr, "Error deserializing node, errno = %d", r);
         }
         // make absolutely sure we crash before doing anything else.
@@ -1091,7 +1088,7 @@ ft_status_update_partial_fetch_reason(
 // callback for partially reading a node
 // could have just used toku_ftnode_fetch_callback, but wanted to separate the two cases to separate functions
 int toku_ftnode_pf_callback(void* ftnode_pv, void* disk_data, void* read_extraargs, int fd, PAIR_ATTR* sizep) {
-    enum deserialize_error_code e = DS_OK;
+    int r = 0;
     FTNODE node = ftnode_pv;
     FTNODE_DISK_DATA ndd = disk_data;
     struct ftnode_fetch_extra *bfe = read_extraargs;
@@ -1119,22 +1116,22 @@ int toku_ftnode_pf_callback(void* ftnode_pv, void* disk_data, void* read_extraar
         if ((lc <= i && i <= rc) || toku_bfe_wants_child_available(bfe, i)) {
             ft_status_update_partial_fetch_reason(bfe, i, BP_STATE(node, i), (node->height == 0));
             if (BP_STATE(node,i) == PT_COMPRESSED) {
-                e = toku_deserialize_bp_from_compressed(node, i, &bfe->h->cmp_descriptor, bfe->h->compare_fun);
+                r = toku_deserialize_bp_from_compressed(node, i, &bfe->h->cmp_descriptor, bfe->h->compare_fun);
             }
             else if (BP_STATE(node,i) == PT_ON_DISK) {
-                e = toku_deserialize_bp_from_disk(node, ndd, i, fd, bfe);
+                r = toku_deserialize_bp_from_disk(node, ndd, i, fd, bfe);
             }
             else {
                 assert(FALSE);
             }
         }
 
-        if (e != DS_OK) {
-            if (e == DS_XSUM_FAIL) {
+        if (r != 0) {
+            if (r == TOKUDB_BAD_CHECKSUM) {
                 fprintf(stderr,
                         "Checksum failure while reading node partition in file %s.\n",
                         toku_cachefile_fname_in_env(bfe->h->cf));
-            } else if (e == DS_ERRNO) {
+            } else {
                 fprintf(stderr,
                         "Error while reading node partition %d\n",
                         errno);

ft/ft-serialize.c

@@ -90,9 +90,9 @@ deserialize_descriptor_from_rbuf(struct rbuf *rb, DESCRIPTOR desc, int layout_ve
     toku_fill_dbt(&desc->dbt, data_copy, size);
 }
 
-static enum deserialize_error_code
+static int
 deserialize_descriptor_from(int fd, BLOCK_TABLE bt, DESCRIPTOR desc, int layout_version) {
-    enum deserialize_error_code e;
+    int r = 0;
     DISKOFF offset;
     DISKOFF size;
     unsigned char *dbuf = NULL;
@@ -103,8 +103,8 @@ deserialize_descriptor_from(int fd, BLOCK_TABLE bt, DESCRIPTOR desc, int layout_
         {
             XMALLOC_N(size, dbuf);
             {
-                ssize_t r = toku_os_pread(fd, dbuf, size, offset);
-                lazy_assert(r==size);
+                ssize_t sz_read = toku_os_pread(fd, dbuf, size, offset);
+                lazy_assert(sz_read==size);
             }
             {
                 // check the checksum
@@ -113,7 +113,7 @@ deserialize_descriptor_from(int fd, BLOCK_TABLE bt, DESCRIPTOR desc, int layout_
                 u_int32_t stored_x1764 = toku_dtoh32(*(int*)(dbuf + size-4));
                 if (x1764 != stored_x1764) {
                     fprintf(stderr, "Descriptor checksum failure: calc=0x%08x read=0x%08x\n", x1764, stored_x1764);
-                    e = DS_XSUM_FAIL;
+                    r = TOKUDB_BAD_CHECKSUM;
                     toku_free(dbuf);
                     goto exit;
                 }
@@ -127,16 +127,15 @@ deserialize_descriptor_from(int fd, BLOCK_TABLE bt, DESCRIPTOR desc, int layout_
             toku_free(dbuf);
         }
     }
-    e = DS_OK;
 exit:
-    return e;
+    return r;
 }
 
 // We only deserialize brt header once and then share everything with all the brts.
-enum deserialize_error_code
+int
 deserialize_ft_versioned(int fd, struct rbuf *rb, FT *ftp, uint32_t version)
 {
-    enum deserialize_error_code e = DS_OK;
+    int r;
     FT ft = NULL;
     invariant(version >= FT_LAYOUT_MIN_SUPPORTED_VERSION);
     invariant(version <= FT_LAYOUT_VERSION);
@@ -152,14 +151,14 @@ deserialize_ft_versioned(int fd, struct rbuf *rb, FT *ftp, uint32_t version)
 
     XCALLOC(ft);
     if (!ft) {
-        e = DS_ERRNO;
+        r = errno;
         goto exit;
     }
     ft->checkpoint_header = NULL;
     ft->panic = 0;
     ft->panic_string = 0;
     toku_list_init(&ft->live_ft_handles);
-    int r = toku_omt_create(&ft->txns);
+    r = toku_omt_create(&ft->txns);
     assert_zero(r);
 
     //version MUST be in network order on disk regardless of disk order
@@ -204,13 +203,13 @@ deserialize_ft_versioned(int fd, struct rbuf *rb, FT *ftp, uint32_t version)
             lazy_assert(readsz == translation_size_on_disk);
         }
         // Create table and read in data.
-        e = toku_blocktable_create_from_buffer(fd,
+        r = toku_blocktable_create_from_buffer(fd,
                                                &ft->blocktable,
                                                translation_address_on_disk,
                                                translation_size_on_disk,
                                                tbuf);
         toku_free(tbuf);
-        if (e != DS_OK) {
+        if (r != 0) {
             goto exit;
         }
     }
@@ -283,8 +282,7 @@ deserialize_ft_versioned(int fd, struct rbuf *rb, FT *ftp, uint32_t version)
     (void) rbuf_int(rb); //Read in checksum and ignore (already verified).
     if (rb->ndone != rb->size) {
         fprintf(stderr, "Header size did not match contents.\n");
-        errno = EINVAL;
-        e = DS_ERRNO;
+        r = EINVAL;
         goto exit;
     }
 
@@ -319,15 +317,15 @@ deserialize_ft_versioned(int fd, struct rbuf *rb, FT *ftp, uint32_t version)
     if (ft->layout_version_read_from_disk < FT_LAYOUT_VERSION_18) {
         // This needs ft->h to be non-null, so we have to do it after we
         // read everything else.
-        e = toku_upgrade_subtree_estimates_to_stat64info(fd, ft);
-        if (e != DS_OK) {
+        r = toku_upgrade_subtree_estimates_to_stat64info(fd, ft);
+        if (r != 0) {
             goto exit;
         }
     }
 
     invariant((uint32_t) ft->layout_version_read_from_disk == version);
-    e = deserialize_descriptor_from(fd, ft->blocktable, &ft->descriptor, version);
-    if (e != DS_OK) {
+    r = deserialize_descriptor_from(fd, ft->blocktable, &ft->descriptor, version);
+    if (r != 0) {
         goto exit;
     }
     // copy descriptor to cmp_descriptor for #4541
@@ -340,18 +338,17 @@ deserialize_ft_versioned(int fd, struct rbuf *rb, FT *ftp, uint32_t version)
     if (version <= FT_LAYOUT_VERSION_13) {
         r = toku_update_descriptor(ft, &ft->cmp_descriptor, fd);
         if (r != 0) {
-            errno = r;
-            e = DS_ERRNO;
             goto exit;
         }
     }
+    r = 0;
 exit:
-    if (e != DS_OK && ft != NULL) {
+    if (r != 0 && ft != NULL) {
         toku_free(ft);
         ft = NULL;
     }
     *ftp = ft;
-    return e;
+    return r;
 }
 
 static u_int32_t
@@ -423,8 +420,7 @@ deserialize_ft_from_fd_into_rbuf(int fd,
                                  struct rbuf *rb,
                                  u_int64_t *checkpoint_count,
                                  LSN *checkpoint_lsn,
-                                        u_int32_t * version_p,
-                                        enum deserialize_error_code *e)
+                                 u_int32_t * version_p)
 {
     int r = 0;
     const int64_t prefix_size = 8 + // magic ("tokudata")
@@ -508,9 +504,8 @@ deserialize_ft_from_fd_into_rbuf(int fd,
     u_int32_t calculated_x1764 = x1764_memory(rb->buf, rb->size-4);
     u_int32_t stored_x1764 = toku_dtoh32(*(int*)(rb->buf+rb->size-4));
     if (calculated_x1764 != stored_x1764) {
-        r = TOKUDB_DICTIONARY_NO_HEADER; //Header useless
+        r = TOKUDB_BAD_CHECKSUM; //Header useless
         fprintf(stderr, "Header checksum failure: calc=0x%08x read=0x%08x\n", calculated_x1764, stored_x1764);
-        *e = DS_XSUM_FAIL;
         goto exit;
     }
 
@@ -543,7 +538,7 @@ exit:
 // Read ft from file into struct.  Read both headers and use one.
 // We want the latest acceptable header whose checkpoint_lsn is no later
 // than max_acceptable_lsn.
-enum deserialize_error_code
+int
 toku_deserialize_ft_from(int fd,
                          LSN max_acceptable_lsn,
                          FT *ft)
@@ -559,18 +554,15 @@ toku_deserialize_ft_from(int fd,
     BOOL h1_acceptable = FALSE;
     struct rbuf *rb = NULL;
     int r0, r1, r;
-    enum deserialize_error_code e0, e1, e;
 
     toku_off_t header_0_off = 0;
-    e0 = DS_OK;
-    r0 = deserialize_ft_from_fd_into_rbuf(fd, header_0_off, &rb_0, &checkpoint_count_0, &checkpoint_lsn_0, &version_0, &e0);
+    r0 = deserialize_ft_from_fd_into_rbuf(fd, header_0_off, &rb_0, &checkpoint_count_0, &checkpoint_lsn_0, &version_0);
     if (r0 == 0 && checkpoint_lsn_0.lsn <= max_acceptable_lsn.lsn) {
         h0_acceptable = TRUE;
     }
 
     toku_off_t header_1_off = BLOCK_ALLOCATOR_HEADER_RESERVE;
-    e1 = DS_OK;
-    r1 = deserialize_ft_from_fd_into_rbuf(fd, header_1_off, &rb_1, &checkpoint_count_1, &checkpoint_lsn_1, &version_1, &e1);
+    r1 = deserialize_ft_from_fd_into_rbuf(fd, header_1_off, &rb_1, &checkpoint_count_1, &checkpoint_lsn_1, &version_1);
     if (r1 == 0 && checkpoint_lsn_1.lsn <= max_acceptable_lsn.lsn) {
         h1_acceptable = TRUE;
     }
@@ -585,6 +577,9 @@ toku_deserialize_ft_from(int fd,
             r = TOKUDB_DICTIONARY_TOO_NEW;
         } else if (r0 == TOKUDB_DICTIONARY_TOO_OLD || r1 == TOKUDB_DICTIONARY_TOO_OLD) {
             r = TOKUDB_DICTIONARY_TOO_OLD;
+        } else if (r0 == TOKUDB_BAD_CHECKSUM && r1 == TOKUDB_BAD_CHECKSUM) {
+            fprintf(stderr, "Both header checksums failed.\n");
+            r = TOKUDB_BAD_CHECKSUM;
         } else if (r0 == TOKUDB_DICTIONARY_NO_HEADER || r1 == TOKUDB_DICTIONARY_NO_HEADER) {
             r = TOKUDB_DICTIONARY_NO_HEADER;
         } else {
@@ -596,13 +591,6 @@ toku_deserialize_ft_from(int fd,
         invariant(!((r0==0 && checkpoint_lsn_0.lsn > max_acceptable_lsn.lsn) &&
                     (r1==0 && checkpoint_lsn_1.lsn > max_acceptable_lsn.lsn)));
         invariant(r!=0);
-        if (e0 == DS_XSUM_FAIL && e1 == DS_XSUM_FAIL) {
-            fprintf(stderr, "Both header checksums failed.\n");
-            e = DS_XSUM_FAIL;
-        } else {
-            errno = r;
-            e = DS_ERRNO;
-        }
         goto exit;
     }
 
@@ -620,14 +608,14 @@ toku_deserialize_ft_from(int fd,
             version = version_1;
         }
     } else if (h0_acceptable) {
-        if (e1 == DS_XSUM_FAIL) {
+        if (r1 == TOKUDB_BAD_CHECKSUM) {
             // print something reassuring
             fprintf(stderr, "Header 2 checksum failed, but header 1 ok.  Proceeding.\n");
         }
         rb = &rb_0;
         version = version_0;
     } else if (h1_acceptable) {
-        if (e0 == DS_XSUM_FAIL) {
+        if (r0 == TOKUDB_BAD_CHECKSUM) {
             // print something reassuring
             fprintf(stderr, "Header 1 checksum failed, but header 2 ok.  Proceeding.\n");
         }
@@ -636,7 +624,7 @@ toku_deserialize_ft_from(int fd,
     }
 
     invariant(rb);
-    e = deserialize_ft_versioned(fd, rb, ft, version);
+    r = deserialize_ft_versioned(fd, rb, ft, version);
 
 exit:
     if (rb_0.buf) {
@@ -645,7 +633,7 @@ exit:
     if (rb_1.buf) {
         toku_free(rb_1.buf);
     }
-    return e;
+    return r;
 }
 
 

ft/ft.c

@@ -510,16 +510,10 @@ int toku_read_ft_and_store_in_cachefile (FT_HANDLE brt, CACHEFILE cf, LSN max_ac
     int r;
     {
         int fd = toku_cachefile_get_fd(cf);
-        enum deserialize_error_code e = toku_deserialize_ft_from(fd, max_acceptable_lsn, &h);
-        if (e == DS_XSUM_FAIL) {
+        r = toku_deserialize_ft_from(fd, max_acceptable_lsn, &h);
+        if (r == TOKUDB_BAD_CHECKSUM) {
             fprintf(stderr, "Checksum failure while reading header in file %s.\n", toku_cachefile_fname_in_env(cf));
             assert(false);  // make absolutely sure we crash before doing anything else
-        } else if (e == DS_ERRNO) {
-            r = errno;
-        } else if (e == DS_OK) {
-            r = 0;
-        } else {
-            assert(false);
         }
     }
     if (r!=0) return r;

ft/fttypes.h

@@ -288,12 +288,6 @@ enum reactivity {
     RE_FISSIBLE
 };
 
-enum deserialize_error_code {
-    DS_OK = 0,
-    DS_XSUM_FAIL,
-    DS_ERRNO
-};
-
 #if defined(__cplusplus) || defined(__cilkplusplus)
 };
 #endif

ft/ftverify.c

@@ -98,7 +98,7 @@ deserialize_headers(int fd, struct ft **h1p, struct ft **h2p)
     BOOL h0_acceptable = FALSE;
     BOOL h1_acceptable = FALSE;
     int r0, r1;
-    enum deserialize_error_code e = DS_OK;
+    int r;
 
     {
         toku_off_t header_0_off = 0;
@@ -108,8 +108,7 @@ deserialize_headers(int fd, struct ft **h1p, struct ft **h2p)
             &rb_0,
             &checkpoint_count_0,
             &checkpoint_lsn_0,
-            &version_0,
-	    &e
+            &version_0
             );
         if ((r0==0) && (checkpoint_lsn_0.lsn <= MAX_LSN.lsn)) {
             h0_acceptable = TRUE;
@@ -123,8 +122,7 @@ deserialize_headers(int fd, struct ft **h1p, struct ft **h2p)
             &rb_1,
             &checkpoint_count_1,
             &checkpoint_lsn_1,
-            &version_1,
-	    &e
+            &version_1
             );
         if ((r1==0) && (checkpoint_lsn_1.lsn <= MAX_LSN.lsn)) {
             h1_acceptable = TRUE;
@@ -138,9 +136,9 @@ deserialize_headers(int fd, struct ft **h1p, struct ft **h2p)
     }
     if (h0_acceptable) {
         printf("Found dictionary header 1 with LSN %"PRIu64"\n", checkpoint_lsn_0.lsn);
-        e = deserialize_ft_versioned(fd, &rb_0, h1p, version_0);
+        r = deserialize_ft_versioned(fd, &rb_0, h1p, version_0);
 
-	if (e != DS_OK) {
+	if (r != 0) {
 	    printf("---Header Error----\n");
 	}
 
@@ -149,8 +147,8 @@ deserialize_headers(int fd, struct ft **h1p, struct ft **h2p)
     }
     if (h1_acceptable) {
         printf("Found dictionary header 2 with LSN %"PRIu64"\n", checkpoint_lsn_1.lsn);
-        e = deserialize_ft_versioned(fd, &rb_1, h2p, version_1);
-	if (e != DS_OK) {
+        r = deserialize_ft_versioned(fd, &rb_1, h2p, version_1);
+	if (r != 0) {
 	    printf("---Header Error----\n");
 	}
     } else {